Home / 823,011.30-1,135,127.52-708,478.11

Finding the Fourth Proportional to 823,011.30, 1,135,127.52 and 708,478.11

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Solution

The fourth proportional to 823,011.30, 1,135,127.52 and 708,478.11 is: 977,159.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,011.30 : 1,135,127.52 = 708,478.11 : x
  2. Step 2: Convert to fraction form
    823,011.30/1,135,127.52 = 708,478.11/x
  3. Step 3: Cross multiply
    823,011.30x = 1,135,127.52 × 708,478.11
  4. Step 4: Simplify right side
    823,011.30x = 804,212,999,978.59
  5. Step 5: Solve for x
    x = 804,212,999,978.59/823,011.30
  6. Step 6: Final answer
    x = 977,159.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.